Well, not really assuming, rather stated by you that this token is not intended to be traded for profit, only for donation. As for the matter if anyone will "cross" the line by trading it for profit, the possibility might be there, existed up to certain degree, but the reason for people not to will be significantly higher, just like other coins out there with little to no utility.

Yours has a benefit of being used for charity, but this purpose only served for a rather short time window, namely when someone being pushed by their impulse to donate up to when the token being traded by the charitable organization for fiat. This time window leave little to no chance of creating a fluctuation on price. Thus, the only chance that'll appeal trader to "cross" the line by trading the token is if this token somehow has a chance to get higher in value through depleted supply just by sitting through time, either by (like you said on paragraph 3) burning or sitting long terms on someone's wallet.

As for burning, you don't have this feature, so it's safe to say a scarcity through burning will not happen for your case. And for long time holding, let us back to the argument above that there's little to no reason for people to speculate that is profitable to hold your token for a long time, as mostly token being bought and sold in a short time window. This should lead us back to the question of "how", but let me rephrase that into "what factor does your coin has that could appeal traders to hold your token that will leads us to scarcity?"

(About paragraph 2), now you're saying that basically no scarcity? Because people can sell and rebuy token indefinitely? Would you please follow me back to previous page and trace where does this scarcity topic keep repeating? You're the first one that insisted that you understand the principle of economy that'll help increasing the value through rarity (scarcity, if we spoke in economic terms). I simply ask how, asking what steps do you take to increases demand, thus forcing scarcity?